Method of treating cotton cord



Patented Aug. 12, 1952 p 2,606,844

2,606,844 I METHOD or TREATING COTTON com) MatthewW, Wilson, Quyahoga.Falls, and Edward T. Lessig, Silver Lake, Ohio, assignors to The B. F.Goodrich Company, New York N. Y, a corporation of New York No Brewing,-vApplication oetob ,29, 1947:,-

Serial No. 782,958 7 Claims. (01. 1177) j UNITED STATES PATENT {icesles-This invention relates to the preparation, of then introduced intoanoven inhwhicha temyarn, or cord which may be used in the manuperature,.of from 225 to 310 1 1 wasmaintairled. facture of pneumatic tlres,reinforced belts, and While the impregnated cord was in the oven a hehke, and has partlcular reference to a methsubstantlally 531111 12 3 0 1of 51100111 five 0d of dipping yarn or cord with a resulting in 5 poundsW mamtalned 0n the 00rd i h crease in tensile strength. cord was dry,which required a period of irom It is an object of this invention toincrease the one. to ten minutes. Thi l. '-T 1 ilfi 'e ound tensilestrength of yarn or cord which is to be On a cord 0 hanks er notin ,q lil e used in composite rubber-fabric or rubber-cord t0 0-. am D6 d l e Istructures. It is also an object to provide a 10 An th r p rti n i 11?534116 QQ ZI I t re C d method of setting yarn or cord after a stretchasa d by h m s r s f steps as delng treatment has been completed t 15 afur scribed above except that instead of the soluther ob eet to providea treatm t Whlch protion of rosin amine acetate there was employed abody of rubber. It is also an object to com- 15 of an alkyl aryl p lethe g a l johq wand 0 25% "of treatment of tire cord with a resultingincrease employed r t i s cbiij ry nlf.

in tensile strength. Other objects will be appartensile Strength f hetwotreat d. ord ent from the description which 'follows: was then measured.on a's anda Scot t nsi e The objects of this invention are attained bymachine with the l sresqlt Rosin amine acetate Conventional solution ofrosin amine with an aliphatic mono carboxyhc In addition to theincreased tensile acid may be employed, although it is preferred 9 thetlre cords Improved trideeolc, myristic, palmitic, stearic, oleic, linoif p the cordswere t e s n eic, linolenic, and the like. or these, it ispre m e th S1mllar results are obtalne amine with other weak or If an ais used the solution may vary in strength from the.steps of dlppmg thecord a allowing better impregnation of the rosin amine W111 accpmplish Edrying Step in t foll i Steps. First, the cotton tire cord compared toseveral hours arns may be wet twisted from the dip sorubber squeezerolls to obtain good lmpregnalution into a final cord and the final cordthen tion of the cord with the solution. The cord was v5 stretched anddried at room temperature with a resulting increase i n l reng h I ispregnated cord while maintaining atension from not n cessa y to ha e a yn s ep or a dry 0.2 to 1.0 gram per denier on said cord.

Period 8:8 $11011, Since in normal mill Practice the 5. A method oftreating cotton cord for reincOrdS will y at normal room temperature byforcing rubber material which comprises impregthe time the cords ar mp yp ss hating said cord with a 1 t 5% by weight aqueous T rosi am neacetate d p y b used at y solution of a rosin amine salt of a saturatedfatty s a e n the manu actu e of c t tire c the acid containing lessthan ten carbon atoms, and r v n yar r c r may be mp na y drying theimpregnated cord While maintaining a ns a p olu on o by t a the fi m atension of 0.2 to 1.0 gram per denier on said cord. material in a yother sa s y m e 10 6. A method or manufacturing cotton cord for i stanctt n y rn may be pp in e resm reinforcing rubber material whichcomprises imamine acetate solution, wet-twisted, stretched, pregnatingsaid cord it 1 t 5% by i ht and dried while under tension- 9 aqueoussolution of rosin amine acetate, and dry- The method outlined hereinmakes it possible m t impregnated d t temperature f om to furtherstrengthen the tire cords to be used i room temperature to 310 F. whilemaintaining p m i t s, r i d belts, or other c ma tension of 0.2 to 1.0gram per denier on said posite rubber fibrous structures, while at thesame cord time the adhesion between the rubber and the 7. A method oftreating cotton cord for reinfiber is increased. forcing rubber materialwhich comprises impreg- Although we have herein outlined specificmhating said cord with a 1 to 5% aqueous solution bodiments of ourinvention, we do not intend to of rosin amine acetate, and drying theimpreglimit ourselves solely thereto, but to include all Hated cord t;bout oom temperature while or the obvious modifications and variationsfallmaintaining t si of 02 t 1,0 gram per ing within the spirit andscope of the appended d ie on aid rd, claims.

We claim: MATTHEW W. WILSON. 1. In a method of .manufacturing cottoncord EDWARD 'I'. LESSIG. for reinforcing rubber material, the stepscomprising impregnating the fibers of said. cord with REFEHENCES CITED athree per cent by Weight aqueous Solution of The following referencesare of record in the rosin amine acetate, anddrying the impregnated meof this patent. cord at a temperature of 300 F. for ten minutes whilemaintaining a tension of 0.5 gram per UNITED STATES PATENTS denier onthe said cord. Number Name Date 2. A method or manufacturing cotton cordfor 5 2,103,218 Gwaltney Dec. 21, 1937 reinforcing rubber material whichcomprises im- 2,137,339 Gwaltney Nov. 22, 1938 pregnating said cord witha 1 to 5% by weight 2,142,688 Brodersen et al. Jan. 3, 1939 aqueoussolution of rosin amine acetate and dry- 2,2l8,284 l-lovey et al. Oct.15, 1940 ing the impregnated cord at a temperature of 2,220,958 JenningsNov. 12, 1940 from 225 F. to 310 F. while maintaining said 40 2,297,536Buokwalter Sept. 29, 1942 cord at a tension from 0.2 to 1.0 gram perdenier. 2,314,996 Lessig et al Mar. 30, 1943 3. A method ofmanufacturing cotton cord for 2,346,126 Lessig Apr, 11, 1944 reinforcingrubber material which comprises dip- 2,364,467 Nickerson Dec. 5, 1944ping said cord in a 1 to 5% by weight aqueous 2,381,398 Bosomworth Aug.7, 1945 solution of rosin amine acetateand drying the 2,419,922 TippettsApr. 29, 1947 impregnated cord at a temperature of 300 F. 2,485,136Bried Oct. 18, 1949 glgigfigialggsfiid cord at a tension of about OTHERREFERENCES 4. A method of manufacturing cotton cord for Duburg, 11eSDeriVeS AZ0teS c e tireinforcing rubber material which comprises im-(We, Buuetm De Llnstmlt D11 59, April pregnating said cord with a 1 to5% by weight 1929, Pages aqueous solution of a rosin amine salt of anali- American Cotton Handbook, 1511 edition, 1941,

phatic mono-carboxylic acid, and drying the im- Pages

2. A METHOD OF MANUFACTURING COTTON CORD FOR REINFORCING RUBBER MATERIALWHICH COMPRISES IMPREGNATING SAID CORD WITH A 1 TO 5% BY WEIGHT AQUEOUSSOLUTION OF ROSIN AMINE ACETATE AND DRYING THE IMPREGNATED CORD AT ATEMPERATURE OF FROM 225* F. TO 310* F. WHILE MAINTAINING SAID CORD AT ATENSION FROM 0.2 TO 1.0 GRAM PER DENIER.